Issolvi quad0-20quad20-40quad40-60quad60-80quad80-100

$$\quad 0 - 20 \quad 20 - 40 \quad 40 - 60 \quad 60 - 80 \quad 80 - 100$$

Evalwa

$$-12100$$

Passi tas-Soluzzjonijiet

Immultiplika 20 u 20 biex tikseb 400.

$$0-400-40\times 40-60\times 60-80\times 80-100$$

Naqqas 400 minn 0 biex tikseb -400.

$$-400-40\times 40-60\times 60-80\times 80-100$$

Immultiplika 40 u 40 biex tikseb 1600.

$$-400-1600-60\times 60-80\times 80-100$$

Naqqas 1600 minn -400 biex tikseb -2000.

$$-2000-60\times 60-80\times 80-100$$

Immultiplika 60 u 60 biex tikseb 3600.

$$-2000-3600-80\times 80-100$$

Naqqas 3600 minn -2000 biex tikseb -5600.

$$-5600-80\times 80-100$$

Immultiplika 80 u 80 biex tikseb 6400.

$$-5600-6400-100$$

Naqqas 6400 minn -5600 biex tikseb -12000.

$$-12000-100$$

Naqqas 100 minn -12000 biex tikseb -12100.

$$-12100$$

Fattur

$$-12100$$